Usage Of Magnifying Glass

Observation method 1: Bring the magnifying glass close to the object being observed, keeping the object stationary and the distance between the human eye and the object unchanged. Then move the handheld magnifying glass back and forth between the object and the human eye until the image is large and clear.
Observation method 2: The magnifying glass should be as close to the eyes as possible. Keep the magnifying glass still and move the object until the image is large and clear.
purpose
1. A colorless achromatic lens that can observe images and identify gemstones very clearly, with a packaging box, lightweight and easy to carry.
2. It can also be used for jewelry certification testing, substrate surface quality, color correction and other inspections.
structure
Divided into two parts: lens and mirror handle.
lens
A whole piece of transparent or semi transparent object.
Its refractive surface is two spherical surfaces, or one spherical surface and one plane.
It feels very smooth to the touch and won't be uneven.
Usually, there are materials surrounding it.
The characteristic is that the middle is thick and the edge is thin.
Mirror handle
Connected to the lens. The appearance is not limited, the most common is columnar.
Usage:
1. Enlarge the image of an object - the main function of a magnifying glass
Place the magnifying glass at an appropriate distance in front of the object to view the magnified image from inside the lens, and be aware that the object is not actually magnified.
2. Focus on ignition - secondary function
Under strong light irradiation, the focal point of the lens will focus, causing it to burn or catch fire.
Please note that the magnifying glass cannot magnify the angle.
Combining two magnifying glasses can increase the magnification of an object.